Author
Topic: PSI (Read 2269 times)

Ok so I stumbled upon a thread with some awesome conversion charts and formulas for converting physical pounds to psi for pneumatic presses. I cannot for the life of me find the thread again! I want to be able to convert lbs to psi. My cylinder is 2" bore with 9" stroke and my mold is 6.5"x7". Any help?

The cylinder converts the pressure( PSI ) in the tank to a force( LBS ) on the plunger . The plunger then presses( with force in LBS ) on the mold which is distributed over the surface creating a pressure ( PSI ) on the curds in the mold.

Can you give me an example if per say I am reading a recipe and it says use 20 lbs of physical weights? Trying to wrap my brain around the process of converting physical pounds to determine what I should set the regulator to given the volume of the mold.

In many cheese making books it says press with 20 lbs without saying what size mold. In those recipes the assumption is that you are making a 1 or 2 gallon batch and the mold size is 4 or 4 1/2 inch diameter mold. So that recipe would NOT give you the correct PRESSURE if you made a larger batch and used a larger diameter mold.

With your cylinder( 100 PSI gives you 314 lbs ) to get 20 lbs ( of weight not pressure ) you would need 100 x 20/314 =6.37 psi on the pressure gauge.